INGREDIENTS
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4 oz. (1/2 of 8-oz. pkg.) PHILADELPHIA Cream Cheese, softened
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1 pkg. (10 oz.) frozen chopped spinach, thawed, well drained
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1-1/4 cups KRAFT Shredded Low-Moisture Part-Skim Mozzarella Cheese, divided
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6 Tbsp. KRAFT Grated Parmesan Cheese, divided
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6 small boneless skinless chicken breast halves (1-1/2 lb.), pounded to 1/4-inch thickness
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1 egg
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10 RITZ Crackers, crushed (about 1/2 cup)
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1-1/2 cups spaghetti sauce, heated